Question about Samsung SMH7178STD Microwave Oven

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When Cooking the Microwave "bogs down", everything else works

I have a Samsung OTR SMH7178STD Microwave. I just moved and the microwave is acting oddly. When cooking it bogs way down, the lights dim and the panel LCD display dims. The food is still heating, but not nearly like it was. It almost seems as though there isn't enough amperage. Any suggestions?

-Shawn

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5 Suggested Answers

MicrowaveSvc
  • 8871 Answers

SOURCE: SMH7178STD Not working properly

E4 means your thermistor (temperature sensor) is shorted or caked with grease, making it look shorted.

Normally you can get Samsung parts here: http://www.samsungparts.com/search/search.asp

But that part does not show up on a search so you'll probably have to call them:

J & J International, Inc.
311 Route 46 W, Suite E
Fairfield, NJ 07004
Tel 800.627.4368
Fax 973.276.9078

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Feb 09, 2008

MicrowaveSvc
  • 8871 Answers

SOURCE: Danby DMW162BL-OTR not cooking after loud popping sound

I would say the high voltage diode blew.

I would check their Web site for links about parts, spares, or service.

http://www.danby.com/

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Jul 04, 2008

MicrowaveSvc
  • 8871 Answers

SOURCE: Samsung otr microwave vent problem

Please call Samsung's Service Division at 800-932-3837.

If they cannot help you, they should be able to give you another number to call.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Oct 24, 2008

buddymcl777
  • 67 Answers

SOURCE: Samsung microwave oven turntable doesn't turn

Yes it just will not cook or defrost very evenly. It is not dangerous however.

Probably the motor or gears that make the turntable go are worn or burnt out.

Posted on May 01, 2009

  • 1214 Answers

SOURCE: Samsung microwave doesn't heat food.

Microwave ovens that do not heat, and failed as you have described, have 1 or more of the following failed components, in order of cost -

1) Fuse
2) Diode
3) Capacitor
4) Transformer
5) Magnetron

4 and 5 are interchangeable when it comes to cost.

Try replacing 1 and 2, then 3, then it's decision time of whether to buy parts or replace the microwave.

Posted on Dec 11, 2009

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Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

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We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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Please call Samsung's Service Division at 800-932-3837.

If they cannot help you, they should be able to give you another number to call.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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I would think it may be a failure of the cook relay on the board, since the noise is quieter.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

Sorry i can't help more. This will need troubleshooting.

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SMH7178STD Not working properly


E4 means your thermistor (temperature sensor) is shorted or caked with grease, making it look shorted.

Normally you can get Samsung parts here: http://www.samsungparts.com/search/search.asp

But that part does not show up on a search so you'll probably have to call them:

J & J International, Inc.
311 Route 46 W, Suite E
Fairfield, NJ 07004
Tel 800.627.4368
Fax 973.276.9078

We're happy to help and we appreciate your thoughtful rating of our answer.

Jan 21, 2008 | Samsung SMH7178STD Microwave Oven

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